AR Head-Up Display Transverse Position Correction
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Solution Overview
Problem
Existing head-up display systems using augmented reality for vehicles experience a significant transverse error when generating the position of a front vehicle on a curved road, due to inaccuracies in radar distance measurements, leading to a discrepancy between the actual and virtual positions.
Innovation Solution
A head-up display device that includes a distance detector, navigator, and image controller to calculate and correct the transverse position of the front vehicle using the curvature radius of the road and lane width, reducing the error between the actual and virtual positions by generating accurate image information for the driver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If augmented reality generates graphic image of front vehicle, then virtual position is displayed, but large error between actual position and graphic image occurs on curved roads
Solution Approach 1:
The patent implements a feedback mechanism where the image controller continuously compares the calculated transverse position with the radar distance measurement, and uses road curvature information to generate correction values. This feedback loop ensures that the graphic image position is continuously adjusted to match the actual vehicle position, reducing the error on curved roads
Solution Approach 2:
The patent performs preliminary calculation of the transverse position using road curvature information before generating the graphic image. By pre-calculating the correction based on curvature radius and lane width, the system prepares accurate position data in advance, ensuring the augmented reality display shows the correct position even on curved roads
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system effectively corrects the transverse error between the actual and virtual positions of the front vehicle, enhancing the accuracy of the augmented reality display and reducing visual ambiguity for the driver.
Implementation Method 1
A distance between an object and a vehicle in the actual space may be recognized by transmitting radio waves or ultrasonic waves through a radar or a lidar and measuring a period of time in which the radio waves or the ultrasonic waves are reflected and returned from the vehicle
Implementation Method 2
A distance between an object and a vehicle in the actual space may be recognized by transmitting radio waves or ultrasonic waves through a radar or a lidar and measuring a period of time in which the radio waves or the ultrasonic waves are reflected and returned from the vehicle
Implementation Method 3
measuring a period of time in which the radio waves or the ultrasonic waves are reflected and returned from the vehicle
Data Source
AI summary
A head-up display device for a vehicle using augmented reality includes a distance detector configured to detect a distance between a driver's vehicle and a front vehicle in front of the driver's vehicle to output distance information. A navigator is configured to output a position of the driver's vehicle and information about a road on which the driver's vehicle drives, as driving information. An image controller is configured to calculate a transverse position of the front vehicle according to the distance information and the driving information, and generate image information corresponding to the front vehicle by using the transverse position. The image controller corrects the transverse position according to whether any one of the driver's vehicle and the front vehicle enters a junction between a curved road and a straight road.